Question Details

use of retina scanning as a biometric authentication method 






1. The use of retina scanning as a biometric authentication method has not
gained favor because:
a. It is inconvenient to use retina scanning in a darkened room
b. Many users cannot hold their eye open long enough for a scan to
complete
c. Users are uncomfortable holding their eye very near the biometric
scanning device
d. The human retina changes significantly over time


2. Voice recognition as a biometric authentication method is difficult to
measure because:
a. Many factors, including current health and respiration rate, make
sampling difficult
b. Computers are not yet fast enough to adequately sample a voice print
c. Voice recognition does not handle accents well
d. Impatience changes voice patterns, which leads to increased False
Reject Rates


3. Which of the following statements about Crossover Error Rate (CER) is
true:
a. This is the point where the False Accept Rate falls below 50%
b. This is the point where the False Reject Rate falls below 50%
c. This is the point where False Reject Rate and False Accept Rate add to
100%
d. This is the point where False Reject Rate and False Accept Rate
are equal


4. A security engineer has recently installed a biometric system, and needs
to tune it. Currently the biometric system is rejecting too many valid,
registered users. What adjustment does the security engineer need to
make?
a. Increase the False Accept Rate
b. Reduce the False Accept Rate
c. Increase the False Reject Rate
d. Reduce the False Reject Rate


5. A security engineer is soliciting bids for a software product that will
perform centralized authentication. The engineer has found two products
so far: one that is based on LDAP and one that is based on TACACS.
Which of the following statements is the best approach?
a. Select the LDAP-based product
b. Do not consider the TACACS-based product, consider the LDAPbased
product, and continue looking for other products
c. Select the TACACS-based product
d. Consider the TACACS-based product, and continue looking for other
products based on TACACS





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